baber/WOPTO huggingface dataset:
Patent GB-856165-A (GB)
Title: An automatic recorder
Inventor: KUTAL OLDRICH
IPC: G01R31/25
Filed: 1957-03-01
Abstract: 856,165. Testing thermionic valves. TESLA NARODNI PODNIK. March 1, 1957, No. 6895/57. Class 37 An automatic recorder of the anode characteristics of a triode 8 comprises an anode voltage source 1, Fig. 1, which-applies a continuously varying voltage Ea to the anode of the valve 8; a switching mechanism 3, actuated by the voltage Ea, whereby various resistors are connected in series with a grid bias voltage source 2 to vary in discrete steps the voltage Ea at the grid of the valve 8; a resistance 37, in the cathode lead of the valve, whereby a voltage proportional to the anode current Ia is derived and fed to a recording mechanism 4 to control the writing device thereof; the carriage movement of the mechanism being controlled by a voltage derived from Ea by a potential divider 35, 36. The anode voltage source, (Fig. 2). Input terminals 9, 10 are fed from a power pack, and the anode voltage Ea at output terminals 20, 21 is continuously varied in accordance with the rate of charge of a control capacitor 15. When Ea attains a predetermined maximum value, the switching mechanism 3, Fig. 1, closes contact a 2  of a relay A/2 thereby discharging the capacitor 15. The switching mechanism, (Fig. 3). When Ea reaches its predetermined maximum value, the variable resistor 23 enabling different maximum values to be adopted, relay C/l is energized and contact c  1  closes thus charging capacitor 29 and energizing relay B/2 to close b 1  and open b 2 . The winding OM of a step-by-step mechanism is thus energized, and the arm 48 engages the adjacent contact of the bank 47 thereby changing the grid voltage Eg by a discrete amount. Relay A/2 is de-energized to close contacts a 1 , az; relay D is thereby energized to hold the writing device of the recording mechanism 4 out of contact with the recording paper during its return to zero position, which return is caused by the discharge of capacitor 15 through contact a 2  whereby Ea is reduced to a predetermined minimum value. When this value is reached, relay C/1 opens and all the relay contacts return to their original positions shown in Fig. 3; capacitor 15 is then recharged during which time Ea increases from its minimum to its maximum value and a further anode characteristic is drawn. The cycle of operations is repeated automatically for a sequence of different grid voltages. The recording mechanism. Two servomechanical systems, fed respectively with voltages derived from Ea and la, each comprise a selfbalancing measuring bridge; the systems controlling respectively the writing device and the carriage movement of the recorder. Modification. The relay C/1 may be energized by the output of an anode dissipation limiter 5, Fig. 1, and not directly by Ea; such a limiter may comprise a ring modulator. Additional voltage sources may be provided for testing multigrid valves. The mutual characteristics of a valve may be recorded by connecting the switching device 3, Fig. 1, to the anode of the test valve and con- .tinuously varying the grid voltage.
Patent GB-239789-A (GB)
Title: Improvements in cushion tires
IPC: B60C7/12
Filed: 1925-03-16
Abstract: 239,789. Golby, F. W., (Lambert Tire & Rubber Co.). March 16, 1925. Non - metallic elastic bodies and cores.- A cushion tyro has conical openings 2 extending inwardly from opposite sides in staggered relation to each other, the axes of the openings being spaced at a distance less than their greatest diameter, and the openings extending more than half-way through the tyre. Preferably the openings extend to threequarters of the width of the tyre, and may pass entirely through it. The axes of the openings lie approximately the same distance from the centre, of the wheel.
Patent GB-674378-A (GB)
Title: Improvements in and relating to phase-modulated transmitters
IPC: H03C3/00
Filed: 1950-03-21
Abstract: 674,378. Frequency and phase modulation. SOC. FRANCAISE RADIO-ELECTRIQUE. March 21, 1950 [March 29, 1949], No. 7087/50. Class 40 (v). A system of generating phase-modulated crystal-controlled waves comprises a highfrequency generator 21, frequency-modulated by the signal and feeding a mixer 25 through a delay line 23, the mixer being also fed from a crystal-controlled source 30 of different frequency. The beats produced are fed back through the line 23 to a second mixer 28 where they combine with waves supplied directly from the source 21 to produce phase-modulated waves of the mean frequency of the crystalcontrolled source 30 but without the original frequency modulation. These waves are selected by the tuned circuit 29 and are transmitted. The delay line 23 gives a phase shift proportional to the frequency of the waves traversing it both forwards and backwards, so that the carrier at 29 bears a phase-modulation proportional to the original frequency modulation. The line 23 may be a length of coaxial line with solid dielectric, the attenuation of which is proportional to the frequency, in order that the waves of low beat frequency returning from the mixer 25 may be less attenuated than those generated in either of the H.F. sources 21, 30. An impedance-matching line 24 may be interposed between the line 23 and the mixer 25. A further line 27, provided between the F.M. source 21 and the mixer 28, is designed to give less attenuation to the beat frequency waves than to the waves of higher frequency from the sources 21, 30. The loop feeder 22 from the source 21 is of a length equal to a quarter-wavelength at the beat frequency, and to an even number of quarter-wavelengths at the crystalcontrolled frequency so that it functions to block the beat frequency from the source 21 and to short-circuit the crystal frequency. This condition requires that the beat frequency should be an even sub-multiple of the crystal frequency. The Specification also describes a circuit, Fig. 1 (not shown), of the kind claimed in Specification 534,955, for converting frequencymodulated waves into phase-modulated waves, in which the F.M. waves are mixed with crystalcontrolled waves in a first mixer, the beat output from which is passed through a delay line to a second mixer where it combines with the FM waves to provide a phase-modulated output at the crystal frequency.
Patent GB-275890-A (GB)
Title: Process of manufacturing grinding and polishing disks
IPC: B24D18/00
Filed: 1927-03-14
Abstract: 275,890. Becker, E. March 14, 1927. Processes.-In the moulding of a grinding or polishing disc having parts of different densities, the material is piled up in the mould at points intended to have greater densities, for example, at the centre, and the final shape is then given, in the same mould, by a ram. In order to equalize the density throughout the thickness of the disc, the mould with the material therein is inverted, and a second compression carried out.
Patent GB-461524-A (GB)
Title: Improvements in bottle closures
IPC: B65D41/12
Filed: 1936-03-09
Abstract: 461,524. Bottle closures. SCHILLER, F. W. March 9, 1936, No. 7132. [Class 125 (iii)] In a bottle closure 1 having a continuous or uninterrupted flange 4, which is held on to the neck of the bottle by rolling, crimping, &c., and a tongue 2, all integrally formed from thin sheet metal capable of being readily torn so that the closure may be removed by pulling with the fingers on the tongue to tear the flange and, if necessary, the cap, the whole, or substantially the whole, of the peripheral edge of the tongue is doubled inwards so as to form smooth edges 6 of double thickness for engagement by the finger nail of the person removing the closure. The tongue may be stiffened by corrugations 7. Reference has been directed by the Comptroller to Specifications 1311 /04, [Class 125], and 406,534.
Patent GB-213270-A (GB)
Title: Process for neutralizing the grain or other defects of transparent or semi-transparent materials
Filed: 1924-03-20
Abstract: 213,270. Michetti, A. March 20, 1924. Printing paper, fabrics, and materials; films. -The grain or other defects of transparent or semi-transparent paper, fabrics, or like materials, more particularly for photographic purposes, is neutralized by coating the materiad on one side with a light-sensilive layer, exposing from the uncoated side and developing and fixing until the grain &c. has disappeared.
Patent GB-453277-A (GB)
Title: Improvements in fluid pressure power systems
IPC: F15B21/041
Filed: 1935-03-08
Abstract: 453,277. Engine valve-gear. WALKER BROS. (WIGAN), Ltd., and WALKER, A. G., Pagefield Iron Works, Wigan. March 8, 1935, No. 7242. [Class 122 (ii)] [See also Group XXVIII] Air for use in coal cutters, rock drills &c. is compressec beyond the desired pressure and allowed to expand in a cy linder the cut-off o which is thermo statically controlled to maintain the fina temperature at a desired value; moisture is thus removed A thermostatic ex. pansion tube 3 is located in the outlet pipe 1 of the expan. sion cylinder, and its rod opens or al. lows to close a valve 6 formed by a lever having a control spring and an adjustable stop. The pressure below a piston 11 is thus varied, and this lever through a rod 15 and lever 16 varies the position of a sleeve 18 on a lever 30 rocked by an arm 32. Tripping dies 23 are thus adjustably actuated through links 20 connected to the sleeve 18, and variably close the inlet valves 24 of the expansion cylinder.
Patent GB-377136-A (GB)
Title: Improvements in or relating to electric pocket lamps
IPC: F21Y101/00
Filed: 1932-03-11
Abstract: 377,136. Electric pocket lamps. ELEKTROTECHNISCHE FABRIK SCHMIDT & CO. GES., Bodenbach, Czecho- Slovakia. March 11, 1932, No. 7349. Convention date, March 11, 1931. [Class 75 (ii).] Mounting reflectors on lamp casings.-An electric pocket lamp comprises a battery casing 1 carrying at one side or end a reflector cap 2 containing a reflector 3 and a lens, the cap 2 having a tubular neck which projects rearwardly to slidably surround and be in pin-and-inclinedslot connection with a tubular guide member 4 mounted within the casing 1, so that, by rotating the cap 2, the reflector 3 may be moved towards or away from a bulb 6 supported in a socket 5 carried by the casing. In the form shown, a flat spring 7 secured to the inner surface of the member 4 carries a pin 8 which projects through a hole in the member 4 and engages an inclined slot in the neck of the reflector cap 2, pins 10 on the member 4 limiting the inward movement of the cap 2. The central contact of the bulb 6 is engaged by a spring arm 11 which passes between two plates 12, 13 of fibre or other insulating material and below a similar flap 14a to engage one pole 14 of the battery, the circuit being completed by the other pole, a switch, and the casing. The latter is closed by upper and lower hinged or detachable covers 18 and is fitted with a wire or other hinged handle 19. A modification in which the reflector cap is carried at the end of the casing is described and illustrated in the Specification.
Patent GB-717533-A (GB)
Title: Preparation of ethylene polymers
IPC: C08F10/00
Filed: 1952-03-24
Abstract: <PICT:0717533/IV (a)/1> A process for manufacturing solid polymers of ethylene under pressure of 50 to 3000 atmospheres and temperatures up to 400 DEG C. in water in the presence of a free radical producing catalyst and/or oxygen is characterized by separating the water from unreacted ethylene and polymer in a first separation stage, and in a second stage, separating the polymer from unreacted ethylene, the pressures and temperatures in both stages being sufficient to maintain the polymer in a molten state.  The first separating stage is preferably conducted at the temperature and pressure of the reaction.  In the apparatus shown, ethylene from holder (1) is compressed in (2) and passed into the cooler (3) after which it is joined by any additive agents, e.g. benzene or other liquid organic medium, introduced through the injector (6).  The mixture is drawn into the compressor (7), where the pressure is increased to reaction pressures, e.g. 800-3000 atmospheres, and passed into the converter (8) into which is simultaneously added water and catalyst via pump (9).  The reaction mixture, under the pressure and temperature of the reaction, is passed into the decanter (11) in which the water and any reaction medium separate as lower layers.  The polymer and unreacted ethylene pass from the top to decanter (13), through, if desired, a pressure let-down valve (10).  The molten polymer settles in the second decanter from which it is drawn off and the evolved gases, mainly ethylene, are recycled.  Two coolers, (3) and (3a), are provided to ensure continuous operation, as one becomes charged with reaction product precipitated from the vapours, it is cut out and the other cut in. Specified catalysts are molecular oxygen or air, benzoyl-, hydrogen-, diethyl-, butyryl-, lauroyl-, urea- and tetrahydronaphthalene peroxides, persuccinic acid, perborates, persulphates, percarbonates, and azo compounds.  The invention includes copolymers of ethylene with other vinyl compounds, many being specified.  The polymers may be modified by using during polymerization halogenated hydrocarbons, saturated aliphatic and aromatic acids, esters, anhydrides, aldehydes, alcohols and ethers, sulphonyl halides, sulphur halides and alkyl sulphates. Specifications 579,884 and 592,486 are referred to.
Patent GB-1382348-A (GB)
Title: Swivel pipe couplings
IPC: F16L37/53
Filed: 1972-02-17
Abstract: 1382348 Pipe couplings W & J RISBRIDGER Ltd 12 Feb 1973 [17 Feb 1972] 7499/72 Heading F2Q In a swivel coupling, bend 19 on interconnection (23 or 24) enables retaining member 16 to be more easily gripped for insertion into or removed from registering grooves (6 and 11). The member 16 may be of brass or plastics. In an aluminium or zinc coupling, split conductive plastics ring 21 prevents seizing or galling.
Patent GB-1306377-A (GB)
IPC: B29C43/02
Filed: 1970-02-17
Abstract: 1306377 Shaping thermoplastic sheets UNION CARBIDE CORP 17 Feb 1970 [17 Feb 1969] 7502/70 Heading B5A The surface of a thermoplastic sheet is shaped by (a) contacting one side (the front) of the sheet with a former, (b) contacting the opposite side (the back) of the sheet with a mould release sheet, (c) applying sufficient heat to the mould release sheet so that the back of the thermoplastic sheet is heated to a temperature at which it flows and the front of the sheet approximates the softening temperature of the sheet but has a viscosity high enough to resist flow, (d) applying sufficient pressure to emboss the surface of the thermoplastics sheet with the surface details of the former without flow of thermoplastic into the former and, (e) removing the pressure, cooling the embossed sheet and separating the sheet from the former. The thermoplastic sheet may be formed from polypropylene, ABS, polyhydroxethers, impact polystyrene, styrene-acrylonitrile copolymers, polycarbonates, poly-4-methyl pentene-1, phenoxys, polyoxymethylenes, polymethacrylates and polyarylene polyethers, of which several particular examples are quoted. The former is preferably heated to a temperature 100-25 F. below the softening temperature of the thermoplastic blank. When moulding polyarylene polyethers, the temperature of the thermoplastic sheet is preferably 375-400 F. and that of the back of the sheet about 700 F. The heat is supplied by a top press platen at a pressure of about 3 p.s.i.g. and the embossing is carried out at a pressure between 200 and 2000 p.s.i.g. The mould release sheet may be formed of PTFE or silicone impregnated glass fibre sheet and the thermoplastic sheet preferably has a thickness between 0À030 and 0À250 inches. The shaped sheet may be used as a former in an injection or compression moulding process using thermoplastic polymers which can be worked below the softening point of the shaped sheet and do not chemically affect it. Many examples of suitable polymers are given.
Patent GB-1214127-A (GB)
Title: Improvements to electric storage heaters
Inventor: BAILEY SYDNEY BREEDON
IPC: F24C15/10
Filed: 1969-04-25
Abstract: 1,214,127. Thermal storage heaters. S. B. BAILEY. 25 April, 1969, No. 7504/69. Heading F4U. In a thermal storage heater which has a plurality of electric core heating elements and which is combined with an electric radiant heater, an electric switch is provided which enables power to be diverted from the elements to the radiant heater by reducing the charging rate of the storage heater from its maximum. The arrangement is such that at no time does the combination of storage heater elements and radiant heater consume more power than the maximum power rating of the elements. As illustrated, three core heating elements R are connected in parallel and together with a radiant heating element S are controlled by a rotary switch RS which supplies power through a switch T to the element S in all its positions except that in which it supplies power to all three elements R. The heater S may thus have a rating which is one third of the total rating of the storage heater elements. However, by isolating the switch contact 3A or the contacts 3A and 2A. The rating of the heater S may be increased to two thirds of, or to be equal to, the rating of the elements. In an alternative form, Fig. 1 (not shown), the core elements are connected in series, the switch positions 3 and 4 are connected to the element junctions, and the switch RS supplies power to all the elements or to one of the junctions.
Patent GB-817982-A (GB)
Title: A heel rest for use by invalids
IPC: A47C16/02
Filed: 1957-03-07
Abstract: 817,982. Footrests. BRUCE, V. E. March 7, 1958 [March 7, 1957], No. 7635/57. Class 52(2) A footrest for use in bed consists of a sponge rubber cushion 13 carried on a base plate 10 with an upstanding end 12 which supports the bedclothes. An auxiliary cushion may be supported against the end plate 12.
Patent GB-638401-A (GB)
Title: Improvements in selenium dry plate rectifiers
IPC: H01L21/103
Filed: 1948-03-13
Abstract: 638,401. Dry-contact rectifiers. CHAMBERLAIN, J. March 13, 1948, No. 7700. [Class 37] A selenium rectifier is subjected to mechanical supersonic vibrations for any period between the beginning of the deposition of the selenium layer and the completion of its crystallization. The vibrations are applied to a holder in which the rectifier is held by any suitable means, e.g. the piezo-electric effect, magneto-strictive effect, or by electromagnetic means. The selenium is applied byany method, and is crystallized by the application of heat.
Patent GB-1128261-A (GB)
Title: Method and apparatus for welding a metal strip on edge to another metal member
IPC: B23K11/06
Filed: 1966-02-22
Abstract: 1,128,261. Welding by pressure. AMERICAN MACHINE & FOUNDRY CO. 22 Feb., 1966 [2 March, 1965], No. 7754/66. Heading B3R. In welding an edge of a metal strip to another member, the members are advanced along opposite sides of a V-shaped gap tapering towards the weld point at which point the members are forced together, a high frequency electric current is caused to flow on the surfaces of the V-shaped gap between the members and prior to the weld point the edge of the strip is formed with portions protruding from the corner regions thereof. A strip 11, Fig. 1, to form the web of a structural. T member and a strip 10 to form the flange are advanced by rollers with a V-shaped gap 18 therebetween to meet at a weld point w where an upper grooved roller 17 presses on the upper edge of the strip 11, a roller 12<SP>1</SP> supporting the strip 10. Either or both strips may advance along a curved path. Current of 50,000-400,000 cycles per second or higher is applied by contacts 20, 21 on opposite sides of the gap 18 to flow to and from the weld point. Pairs of grooved rollers 27, 28, 29, 30 engage the edges of the strip 11 in advance of the contacts 20, 21 and shape the lower edge to be welded into a bulged configuration, the sides of the strip being extended outwardly. The higher frequency current which then flows on the edge penetrates deeply into the corners of the bulged portions and the weld between the edge and the strip 11 and the face of the strip 10 shows extruded overheated metal at these portions and a forged weld having a width equal to or greater than the strip width, without protrusions, is formed. Beyond the weld point scarfing tools 37 are provided to remove the extruded metal. An additional flange strip may be similarly welded to the top of the web strip. In modifications, the protruding metal may extend downwardly by forming a shallow channel 42, Fig. 6, or may extend both outwardly and downwardly, Fig. 7 (not shown).
Patent GB-729640-A (GB)
Title: Improvements in or relating to tools for removing tyres from wheels
Inventor: DAW REGINALD FRANK
IPC: B60C25/02
Filed: 1951-04-04
Abstract: 729,640. Tyre-removing tools. DUNLOP RUBBER CO., Ltd. March 18, 1952 [April 4, 1951; Jan. 30, 1952], Nos. 7769/51 and 2463/52. Class 144 (1). A tool for removing tyres from wheel-rims comprises normally-aligned hooked ends on reaction and displacement members which respectively engage the rim-flange and the tyrebead and means for effecting movement of the displacement member, which member is linearly displaceable in the body of the reaction member, there being a pivoted member having a hooked end for engaging the rim-flange at a diametrically-opposite position. As shown, the rim-flange reaction member 1 is formed with spaced hooks 4 between which the similarlyhooked end 6 of the tyre-displacement member 5 is normally aligned. A bar 21 having a rimengaging hooked end 22 to engage a diametrically opposite point is adjustably secured between a pair of links 18 pivoted on the member 1. The tyre displacement member 5 is forcibly moved to free the tyre-bead by a cam 12a which is mounted on a bolt passing through the member 1 and operated by means of a detachable hand-lever 14. The lever 14 is hollow to engage a spigot 16 provided on the cam body and has a cross-bar 15 which can be engaged in slots 10 at the end of the reaction member to lock the cam and allow the lever to be used to force the aligned hook ends 4, 6 between the rim flange and the tyre. Thereafter the lever 14 is raised to release the crossbar 15 from the slots 10 so that the lever can then turn the cam to disalign the hook end 6 and so displace the tyre away from the rim flange. In a modification, the member 5 is moved by means of a screw bolt threaded through a closed end of the member 1, and permanently but rotatably connected to the member 5. It is also stated that fluid-pressure means may be employed for this purpose. Specification 694,973 is referred to.
Patent GB-125256-A (GB)
Title: Improvements in and relating to Artificial Fuels and Processes for Manufacturing the same.
Inventor: ARKELL ANNIE MARIE LOUISE
IPC: C10L5/16
Filed: 1918-05-09
Abstract: 125,256. Arkell, A. M. L. May 9, 1918. No Patent granted (Sealing fee not paid). Composition fuel.-A porous fuel is made by moulding, under the smallest pressure necessary to obtain a coherent block, a mixture of small coal, anthracite duff, and like fuel and pitch, solidified petroleum, and like binding material, together with water. The mixture is moulded in an ordinary press for producing blocks, or in an extrusion press producing bars which are then cut up into blocks. The blocks are passed through a dryer in which a temperature of from 600 to 650‹ F. is maintained to drive off the water and melt the binding-material which soaks into the material of the blocks. In this way, the water serves only as a temporary binder and, in the finished fuel blocks, air is stated to take the place of the eliminated water. Washery settlings, such as Powell Duffryn settlings already containing water, may be used with the bituminous binder.